CN104410600B - Control network multi-protocol data converting device - Google Patents

Abstract

The invention discloses a control network multi-protocol data converting device, and belongs to a type of data converting device in the field of industrial control. The device is characterized by comprising a Profibus-DP bus interface, a CAN bus interface, a Profibus-DP signal conditioning circuit, a CAN signal conditioning circuit, a microcontroller circuit, an extended memory circuit, a watchdog circuit, a first crystal oscillator circuit, a keyboard and a display circuit, a second crystal oscillator circuit, a three crystal oscillator circuit, a power supply circuit, an RS485\RS232\RS422 signal conditioning circuit, an RS485\RS422 serial interface, an RS232 serial interface, and a power switch. The device can achieve conversion of any RS485/RS232/RS422 standard interface device data to any Profibus/CAN field bus protocol data, and is equivalent to an integration of 6 data converting devices with a single function. The control network multi-protocol data converting device has wide application prospect and market space in a complex networked control system, and has advantages of being high functionally integrative, control reliable, safe, easy to use, flexible, inexpensive and suitable for promotion.

Description

Controlling network multi-protocol data conversion equipment

Technical field

The present invention relates to a kind of controlling network multi-protocol data conversion equipment, in that context it may be convenient to realize RS485/RS422/ Multi-functional conversion between RS232/ standard interface equipments data and Profibus/CAN field bus protocol data, belongs to industry Data conversion class device in control field.

Background technology

In industrial control field, LonWorks are automatic control technology and computer communication technology development and mutually melt The networking automatic control technology of conjunction.From Distributed Control System, field bus control system or even Industrial Ethernet Control System All it is based on controlling network data communication.Current industrial control network is just towards communication network, data integration, control Make the intelligentized characteristic direction development of decentralized and field apparatus.

In industrial control network, " system integration " refer on the basis of digital information interaction, will be relatively independent, each The self-dispersed equipment or system globe area for having data communication capabilities in unified monitors environment, in real time, it is reliable, be efficiently completed Monitoring and management role.Due to the historical reasons that industrial control network art and market interest drive, there is branch at present The controlling network system for holding different communications protocol exists simultaneously, and " system integration " turns into of restriction industrial control network development Bottleneck problem.By taking fieldbus as an example, hold simultaneously at present in the standard for Fieldbus IEC61158 that International Electrotechnical Commission promulgates 8 kinds of incompatible disclosure agreements are received, non-public agreement also has kind more than 40, various protocols and the office for depositing in fieldbus field Face is difficult to change in a short time.

In face of the situation of the various control network system dispute of current support different agreement, the field apparatus of different vendor is difficult To follow, to realize carrying out data communication with controlling network, having for the different communications protocol of substantial amounts of support is generated therewith The smart machine of data communication interface, this present situation makes the data " system integration " of smart machine encounter difficulty, result in institute The generation of industrial control network system " information island " phenomenon of meaning.In view of smart machine communication connects in current industrial control field Mouthful equiping actulity, especially a large amount of scene I ＆C equipments of controlling network bottom e.g., for pressure, temperature, flow, weigh Intelligence instrument and sensor, in " system integration " mode completely by the way of " net is on earth ", e.g., based on EPA Fieldbus Profinet technologies or OPC (object linking and embedding for process control) Technology, the obstacle that currently also there is the aspects such as certain technology application cost and market interest protection.This kind equipment is realized at present Still be converted into a kind of device data of agreement separately by gateway or communication adapter by the major way of data " seamless fusion " A kind of device data of agreement.

In the conversion method of industrial control network device data, some world-renowned equipment manufacturers provide many The fit solutions of soft and hardware.

For example, Siemens are changed in RS422/RS485 interface equipments data to Profibus-DP protocol datas , it is necessary to buy hardware configuration PLC higher in mode（programmerable logic controller）.Such as, in control Originally CPU313C types can be selected in network, if there are RS422/RS485 device datas to Profibus-DP networks in system The convert task of data, just must be from CPU313C-2PtP types, integrated two communication interfaces of the type the machine, and one is system The communication interface of the support MPI agreements (Siemens S7-300 series of PLC is used to program/non-public the agreement of configuration) of acquiescence, separately One point-to-point serial communication interface for being to support RS422/RS485 device datas.Needed in no-protocol side in PLC when using Sufficiently complex communication program is write under formula could read RS422/RS485 device datas, and be needed system in communication The MPI interfaces of acquiescence are arranged to Profibus-DP interfaces could complete data conversion.The method data conversion type is single, firmly Part expense is big, and programing work amount is big, debugging is difficult, constrains the demand for control of this kind of field device network.

And for example, Siemens can on Modbus protocol datas to Profibus-DP protocol data conversion regimes To there is following several schemes.Scheme one：By S7-200PLC integrated datas.There was only S7-200PLC in Siemens's series of PLC In be equipped with Modbus RTU communications protocol, after Modbus device datas are integrated into S7-200PLC by Modbus networks, also Need to be by data reconvert to Profibus-DP networks, so except configuration S7-200PLC (Modbus network Zhong Zuo main websites) also Special EM277 Communication processors (S7-200PLC accesses the special slave station module in Profibus-DP networks) need to be installed additional, should Scheme has the disadvantage that hardware configuration is relatively costly, and S7-200PLC is used as the software development difficulty of Modbus communication networks main website It is larger.Scheme two：It is integrated by CP341 Communication processors.Filled on the expansion slot position of controlling network CPU315-2DP mainframes CP341 point-to- point communication processors are carried, it is logical with Modbus equipment to realize also to need purchase Modbus rtu protocols drive software , then be transformed into data in Profibus-DP networks by CPU315-2DP itself integrated DP interfaces again by news, the program Have the disadvantage that the cost of investment of soft and hardware is higher.Scheme three：By the method for ASCII Driver agreement intermediate conversions.The program CP341 Communication processors need to be set up, by the ASCII Driver agreements being integrated in CP341 Communication processors, using software The method of programming realizes Modbus rtu protocols.Although the shortcoming of the program is to eliminate purchase Modbus rtu protocols to drive The expense of software, but hardware cost is still higher, and the technical problem of most critical is that software development difficulty is larger.

The soft and hardware fit solutions major defect that external relevant manufacturers are provided is unitary function, soft and hardware price Height, and generally require to pay software development cost higher.Particularly with " data for the measure and control instrument of controlling network bottom It is integrated " cost it is prohibitively expensive.

To reduce the soft and hardware cost of agreement and data conversion, some domestic associated companies are also dedicated to this respect R＆D work, and achieve significant achievement.For example, Beijing D＆S FieldBus Technology Co., Ltd. has been developed at present Profibus-RS485 device bus bridge, Profibus-OMRON PLC protocol bus bridge, Profibus-RS232 device bus Bridge, Profibus-CAN protocol bus bridge, Profibus-Modbus protocol bus bridge, Profibus- Yanhua ADAM protocol bus The data conversion class product such as bridge.These products, hardware price declines to a great extent compared with same kind of products at abroad, and software overhead has subtracted It is small, but significantly have the disadvantage that function is excessively simple, the flexibility of such product and versatility wretched insufficiency, it is impossible to adapt to complicated Or the data conversion demand of special automation and control network system.In complicated controlling network, generally require agreement and data turn Kind equipment is changed with adaptability higher and flexibility, in that context it may be convenient to change conversion regime to adapt to different network body tyings Structure.

RS485, RS232 and RS422 are current industrial control field application serial interface standards widely, initially Formulated and issued by EIA.The electrical characteristic of RS485, RS232 and RS422 standard docking port is made that rule Determine, and do not contain the concrete regulation of plug-in unit, cable and data exchange agreement, therefore user can on this basis set up oneself High-level communications protocol.At present, in substantial amounts of industry spot smart machine, many is only configured with RS485, RS232 or RS422 mark Accurate serial communication interface, is not directly provided with field bus communication function.Although presently, there are agreement disclose with it is non-public Fieldbus quantity it is various, through investigating part shared by Profibus-DP and CAN field bus protocols in China industrial control network Volume is heavier.In view of the demand in such product exploitation actuality both domestic and external and domestic industry control market, research and development multifunctional unit RS485 RS232 RS422 standard interface equipments to Profibus-DP DTU between CAN fieldbus have Certain novelty, creative and practicality.Due to the controlling network substantial amounts of current various architectures, many associations are determined The research and development field of view gateway and DTU is very wide, being solved present invention is only intended for current control field urgent need, Technological Economy application prospect preferably a part of content carries out the research and development of creativeness.The research and development work of the multi-protocol data conversion equipment The research application field of gateway and data conversion class device is expanded, the blank in the field has been filled up, has been industrial control network Some beneficial work have been done in the open interconnection and live decentralised control of system, realize the " seamless to melt of field equipment data Close ".

The content of the invention

It is an object of the invention to provide a kind of controlling network multi-protocol data conversion equipment, the multi-protocol data converting means Put can complete RS485 RS232 in RS422 any standard interface equipment data to Profibus-DP CAN scenes always The convert task of any protocol data in line, make with RS485 RS232 the equipment of RS422 serial communication abilities need not It is any change by the multi-protocol data conversion equipment be directly connected to Profibus-DP in CAN fieldbus control networks, Realize a kind of multi-functional conversion of industrial field device data.

Technical solution

In order to realize above-mentioned RS485 RS232 in RS422 any standard interface equipment data to Profibus- DP in CAN fieldbus any protocol data translation function, multi-protocol data of the present invention for industrial control network The technical solution of conversion equipment is：Including Profibus-DP EBIs and CAN interface, described Profibus- DP EBIs are connected on the outside of cabinet with Profibus-DP buses, on the inside of the cabinet with data converting circuit in The side connection of Profibus-DP signal conditioning circuits, the opposite side and microcontroller of the Profibus-DP signal conditioning circuits Device circuit is connected；Described CAN interface is connected on the outside of cabinet with CAN, on the inside of cabinet and data converting circuit In CAN signal modulate circuit side connection, the opposite side of CAN signal modulate circuit is connected with microcontroller circuit；It is described Microcontroller circuit will also respectively with extended menory circuit, watchdog circuits, the first crystal oscillating circuit, keyboard and display Panel circuit, power circuit, RS485 RS232 the connection of RS422 signal conditioning circuits, described extended menory circuit is used for Expand external RAM to microcontroller circuit；Described watchdog circuits are used to prevent program fleet；Described first Crystal oscillating circuit is used to provide accurate clock to microcontroller circuit；Described keyboard and display pannel circuit are used for the present invention The parameter setting of device, operation are operated and running status display function；Described power circuit is used to be carried to microcontroller circuit For working power；Described power circuit will also respectively with Profibus-DP signal conditioning circuits, CAN signal modulate circuit, RS485 RS232 RS422 signal conditioning circuits, extended menory circuit, watchdog circuits, the second crystal oscillating circuit, keyboard and Display pannel circuit is connected, and provides working power to it respectively, and described power circuit will also be connected with power switch；3rd Crystal oscillating circuit is connected with CAN signal modulate circuit, for giving its accurate clock of offer；Second crystal oscillating circuit and Profibus- DP signal conditioning circuits are connected, for giving its accurate clock of offer；RS485 in described data converting circuit RS232 RS422 signal conditioning circuits will also respectively with RS485 RS422 serial line interfaces and RS232 serial line interfaces be connected；Described RS485 RS422 serial line interfaces on the outside of cabinet with RS485 RS422 field apparatus be connected；Described RS232 serial line interfaces exist Cabinet outside is connected with RS232 field apparatus；Described RS485 RS422 serial line interfaces and RS232 serial line interfaces and scene The connection of equipment is using the DB-9 connectors of standard.

Compared with prior art, the advantage of the invention is that：

（1）The controlling network multi-protocol data conversion equipment can realize having any standard interface RS485 Data translation tasks of the industrial field device of RS232 RS422 to any one Xian ChangzongxianProfibus-DP CAN.In body In the complicated controlling network of architecture, generally requiring agreement and data conversion class device has adaptability higher and flexibility, Can flexibly shift gears to adapt to different network structures.Especially with local bus profibus-OP CAN be industry It is a large amount of expensive in the former control system that can reuse in the transformation project of controlling network, with RS485 RS232 RS422 The field apparatus of standard interface（Such as, for pressure, temperature, flow, intelligence instrument, sensor or the executing agency such as weigh）, should Class field apparatus by apparatus of the present invention can easily access Profibus-DP CAN industrial control networks.

（2）The multi-protocol data conversion equipment makes full use of specialized protocol chip, serial ports recombination level in hardware design The technical advantage of conversion chip, high-speed driving chip etc., software overhead is effectively reduced while system reliability is improved.Example Such as, RS485 RS232 the use of RS422 signal conditioning circuits can support RS485, RS232 and RS422 standard serial interface pass The MAX3162 recombination level conversion chips of defeated mode, realize the convert task of serial signal and single-chip microcomputer Transistor-Transistor Logic level signal, drop Low hardware cost improves reliability simultaneously；And for example, Profibus-DP signal conditioning circuits use the special associations of Siemens Profibus The communication task of view chip SPC3, Profibus-DP sides is completed by protocol chip SPC3, and SPC3 chips are the special of optimization Profibus-DP slave station protocol chips, support the baud rate of 9.6kb/s to 12Mb/s；It is capable of the baud rate of Auto Observation System network And the baud rate of oneself is adjusted；It is internally integrated the dual port RAM of 1.5KB；It is integrated with WatchDog Timer.SPC3 is by simultaneously Mouth and single-chip microcomputer carry out data exchange.The key component of Profibus-DP agreements is by intelligent protocol chip SPC3 realizations, its remaining part Divide and realized by scm software, single-chip microcomputer realizes data exchange, so, improves hardware reliability, software by controlling SPC3 Development amount be greatly lowered, while the operating pressure of effective W78E58B single-chip microcomputers when alleviating system operation.And for example, CAN signal modulate circuit realizes the design of CAN fieldbus nodes, controller using special CAN controller SJA1000 Data exchange, the major part of CAN protocol data conversion are carried out by parallel port and single-chip microcomputer between SJA1000 and single-chip microcomputer Completed by controller SJA1000, single-chip microcomputer realizes data exchange by controlling SJA1000, so design can be greatly reduced The expense of programming software, can effectively save the calculation process resource of W78E58B single-chip microcomputers during system operation.

（3）The controlling network multi-protocol data conversion equipment has functional integration high, and control is reliable, safety, user Just, flexibly, it is cheap, the advantages of suitably popularization.It is multi-functional and low for industrial control network system " data integration " device Cost has done some beneficial work.

Brief description of the drawings

Fig. 1 is controlling network multi-protocol data converter device and peripheral hardware annexation schematic diagram；

Fig. 2 is controlling network multi-protocol data conversion equipment hardware block diagram；

Fig. 3 is the circuit diagram of microcontroller circuit 5 shown in Fig. 2；

Fig. 4 is the pin schematic diagrames of Profibus-DP EBIs shown in Fig. 21 and Profibus-DP signal conditioning circuits 3 circuit diagrams；

Fig. 5 is the pin of CAN interface 2 shown in Fig. 2 schematic diagram and the circuit diagram of CAN signal modulate circuit 4；

Fig. 6 be RS485 shown in Fig. 2 RS232 the circuit diagram of RS422 signal conditioning circuits 11, RS485 RS422 it is serial Interface 12 and the pin schematic diagram of RS232 serial line interfaces 13；

Fig. 7 is keyboard shown in Fig. 1 and Fig. 2 and the circuit diagram of display pannel circuit 9；

Fig. 8 is watchdog circuits shown in Fig. 27 and the circuit diagram of power circuit 10；

Fig. 9 is the circuit diagram of extended menory circuit shown in Fig. 26；

Figure 10 is the panel schematic diagram of keyboard shown in Fig. 1 and Fig. 2 and display pannel circuit 9；

Figure 11 is the main program flow chart of apparatus of the present invention combination concrete operation step.

Specific embodiment

The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Controlling network multi-protocol data conversion equipment of the present invention and peripheral hardware annexation

As shown in figure 1, controlling network multi-protocol data conversion equipment is by cabinet 18, data converting circuit 17, Profibus- DP EBIs 1, CAN interface 2, RS485 RS422 serial line interfaces 12, RS232 serial line interfaces 13, power switch 16, key Disk and display pannel circuit 9 are constituted.Described data converting circuit 17 can be with by Profibus-DP EBIs 1 Profibus-DP fieldbus connect, can be connected with CAN fieldbus by CAN interface 2, by RS485 RS422 Serial line interface 12 can with RS485 the field apparatus of RS422 interfaces be connected, can be with tool by RS232 serial line interfaces 13 The field apparatus for having RS232 interfaces is connected, and is connected with alternating current 220V power outlet by the power switch 16 of the upper side of cabinet 18, Described data converting circuit 17 is connected in cabinet inside with the keyboard and display pannel circuit 9 of case front panel.Data turn Change circuit 17 and complete the industrial field device of any standard interface RS485 RS232 RS422 to any fieldbus Profibus-DP CAN data translation tasks；Keyboard and display pannel circuit 9 be used for apparatus of the present invention parameter setting, Operation operation and the display of state parameter；Power switch 16 is used to connect alternating current 220V working power to apparatus of the present invention.

Hardware systems of the present invention for the multi-protocol data conversion equipment of industrial control network

Hardware block diagram of the present invention is as shown in Fig. 2 including Profibus-DP EBIs 1 and CAN interface 2, institute The Profibus-DP EBIs 1 stated are connected in the outside of cabinet 18 with Profibus-DP buses（See Fig. 1）, on the inside of cabinet with The side connection of the Profibus-DP signal conditioning circuits 3 in data converting circuit 17, the Profibus-DP signal conditions The opposite side of circuit 3 is connected with microcontroller circuit 5；Described CAN interface 2 is connected in the outside of cabinet 18 with CAN （See Fig. 1）, it is connected with the side of the CAN signal modulate circuit 4 in data converting circuit 17 on the inside of cabinet, CAN signal conditioning The opposite side of circuit 4 is connected with microcontroller circuit 5；Described microcontroller circuit 5 will also respectively with extended menory circuit 6th, watchdog circuits 7, the first crystal oscillating circuit 8, keyboard and display pannel circuit 9, power circuit 10, RS485 RS232 RS422 signal conditioning circuits 11 are connected, and described extended menory circuit 6 is used to be deposited to the expansion external RAM of microcontroller circuit 5 Reservoir；Described watchdog circuits 7 are used to prevent program fleet；The first described crystal oscillating circuit 8 is used to give microcontroller electricity Road 5 provides accurate clock；Described keyboard and display pannel circuit 9 are used for the parameter setting of apparatus of the present invention, operation behaviour Make and running status display function；Described power circuit 10 is used to provide working power to microcontroller circuit 5；Described electricity Source circuit 10 will also respectively with Profibus-DP signal conditioning circuits 3, CAN signal modulate circuit 4, RS485 RS232 RS422 Signal conditioning circuit 11, extended menory circuit 6, watchdog circuits 7, the second crystal oscillating circuit 14, keyboard and display pannel Circuit 9 is connected, and provides working power to it respectively, and described power circuit 10 will also be connected with power switch 16；3rd crystal oscillator Circuit 15 is connected with CAN signal modulate circuit 4, for giving its accurate clock of offer；Second crystal oscillating circuit 14 and Profibus- DP signal conditioning circuits 3 are connected, for giving its accurate clock of offer；RS485 in described data converting circuit 17 RS232 RS422 signal conditioning circuits 11 will also respectively with RS485 RS422 serial line interfaces 12 and RS232 serial line interfaces 13 Connection；Described RS485 RS422 serial line interfaces 12 the outside of cabinet 18 and RS485 RS422 field apparatus be connected（See figure 1）；Described RS232 serial line interfaces 13 are connected in the outside of cabinet 18 with RS232 field apparatus（See Fig. 1）；Described RS485 RS422 serial line interfaces 12 and RS232 serial line interfaces 13 use the DB-9 connectors of standard with the connection of field apparatus.

Wherein, microcontroller circuit 5 is as shown in figure 3, microcontroller circuit 5 includes U1_1 chips（Model W78E58B）, The reference voltage end VDD of U1_1 chips is divided into two-way, and+5V power supplys are connected to all the way, separately leads up to electric capacity C6 and is connected to ground GND；RXD/P3.0 serial ports receiver input termination RX leads, receive serial data；TXD/P3.1 serial ports transmitter is exported Termination TX leads, send data to serial ports；The end XTAL1 of clock oscillation circuit input/output 1 is divided into two-way, and stone is connected to all the way The side of English crystal oscillator Y, separately leads up to electric capacity C8 ground connection GND；The end XTAL2 of clock oscillation circuit input/output 2 points is Two-way, is connected to quartz oscillator Y opposite sides all the way, separately leads up to electric capacity C7 ground connection GND；VSS ends are grounded GND； INT0/P3.8 termination leads INT0；INT1/P3.3 termination leads INT1；WR/P3.6 external data storages write gate terminates lead WR, RD/P3.7 external data memory read gate terminate lead RD, are written and read control to external memory storage respectively；P1.5、 P1.6, P1.7 meet lead MOSI, MISO and SCK successively respectively, and program is write into single-chip microcomputer；P3.4, P4.0, P4.1 difference are successively Lead SCLK, CS and SID control display is connect to show；RST terminates lead RESET1, carries out reset operation；EA termination+5V electricity Source, forbidding processor accesses external ROM；ALE terminates lead ALE, and address latch is enabled, and address wire is multiplexed with data wire； P2.6/A14, P2.7/A15 terminate respectively lead A14, A15 successively, and gating chip U1_4 is selected by decoder（74LS139）； P0.0/AD0, P0.1/AD1, P0.2/AD2, P0.3/AD3, P0.4/AD4, P0.5/AD5, P0.6/AD6, P0.7/AD7 respectively according to It is secondary to meet lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, as address and data-reusing bus transfer address least-significant byte with Data；P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11, P2.4/A12, P2.5/A13 end connect successively respectively lead A8, A9, A10, A11, A12, A13, as address high；T2/P1.0, T2EX/P1.1, P1.2, P1.3, P1.4 connect lead respectively P1.0、P1.1、P1.2、P1.3、P1.4；

ISP interfaces U1_3（Model Header5X2）1 termination lead MOSI；5 termination lead RESET1；7 termination leads SCR；9 meet lead MISO；2 termination+5V power supplys；4th, 6,8,10 ends ground connection GND；

Chip U1_2（Model 74LS139）A1, B1 end meet lead A15, A14 successively, enter row decoding；Output end 1Y0, 1Y1,1Y2 meet lead Y0, Y1, Y2 successively；VCC termination powers+5V；G1 ends are grounded GND with GND ends；

Microcontroller circuit 5 controls the work side of the device as the core of controlling network multi-protocol data conversion equipment The control task of formula and data conversion, controls display display function, all chip operations or mourns in silence all by microcontroller circuit 5 It is controlled.

The pin schematic diagram of Profibus-DP EBIs 1 and the circuit diagram of Profibus-DP signal conditioning circuits 3 such as Fig. 4 institutes Show, wherein, Profibus-DP signal conditioning circuits 3 include Profibus-DP specialized protocol chips U2_1（Model SPC3）, The vdd terminal of Profibus-DP specialized protocol chips U2_1 connects+5V power supplys；DIVIDER terminates+5V power supplys；Vss ends are grounded GND； XCS ends connect+5V power supplys by resistance R2；XWR terminates B2 leads；XRD terminates lead B1, control chip read-write；XINT/ MOT ends are grounded GND by resistance R3；CLK input end of clock meets lead 48M；AB8, AB9 end are grounded GND；AB10 ends pass through resistance R4 is grounded GND；Data and address multiplex port DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7 connect successively respectively lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, receive and send address least-significant byte or data；AB0, AB1, AB2, AB3, AB5 end point Lead A8, A9, A10, A11, A13 are not met successively, as high address line；AB4 meets lead A12 by phase inverter UxA, used as height Bit address line；MODE ends connect+5V power supplys by resistance R5, are multiplexed data, address bus；ALE address latches enable termination and draw Line B0；The serial mouth TXD ends that send are connected to U2_3 chips（Model HCPL7720）V1 ports, send data to PROFIBUS- DP buses；Serial interface closing in RXD ends are connected to U2_2 chips（Model HCPL7720）V0 ends, receive the data from bus； RTS ends are connected to U2_4 chips by resistance R9（Model HCPL0611）VF- ends, as request to send signal end；XCTS ends GND is grounded by resistance R6；XTEST0, XTEST1 end connect+5V power supplys by resistance R7, R8 respectively；RESET terminates lead RESET1, resets to chip；X/INT ends connecting lead wire INT0, sends interrupt requests.

The 7 pin ground connection GND of described phase inverter UxA；14 pin connect+5V power supplys；2 pin meet AB4；1 pin connecting lead wire A12；

U2_2, U2_3, U2_4 chip are optocoupler, and Phototube Coupling is carried out to transceiving data, wherein, the V1 ends of described U2_2 Connection bus transceiver U2_5 chips（Model SN75176B）R ends, receive bus data；VDD2 ends point two-way, leads up to Electric capacity C12 is grounded GND, and another road connects+5V power supplys；VDD1 ends point two-way, leads up to electric capacity C13 ground connection GND, and another road connects+ ISO5V power supplys；GND1 ends point two-way, meets electric capacity C13 all the way, and another road is grounded GND；GND2 ends point two-way, connects electric capacity all the way C12, another road is grounded GND；

The V0 ends of described U2_3 chips connect the D ends of bus transceiver U2_5, and data are sent to bus；VDD1 is divided to two in end Road, connects+5V power supplys all the way, separately leads up to electric capacity C14 ground connection GND；VDD2 ends point two-way, connects+ISO5V power supplys all the way, another Road is grounded GND by electric capacity C15；GND1 ends point two-way, meets electric capacity C14 all the way, and another road is grounded GND；GND2 ends point two-way, one Road meets electric capacity C15, and another road is grounded GND；

Two-way is divided at the V0 ends of described optocoupler U2_4 chips, all the way connecting resistance R10, and another road connects bus transceiver U2_5's DE ends, send data and enable signal；VF+ terminates+5V power supplys；The tunnels of VCC Duan Fen tri-, the first via is grounded GND by electric capacity C16, the Two road connecting resistance R10, the 3rd tunnel meets power supply+ISO5V；VE terminates+ISO5V power supplys；GND ends point two-way, meets electric capacity C16 all the way, Another road is grounded GND；

The tunnels of A Duan Fen tri- of bus transceiver U2_5 chips, meet terminal resistance R11 all the way, and another road meets EBI COM3 8 ends, 2 ends of jumper switch U2_7 are finally connect all the way；The tunnels of B Duan Fen tri-, meet terminal resistance R11 all the way, and another road connects bus and connects 3 ends of mouth COM3, finally connect 1 end of jumper switch U2_7 all the way；VCC ends point two-way, leads up to electric capacity C17 ground connection GND, separately ISO+5V power supplys are connect all the way；RE ends are grounded GND as read bus data Enable Pin；5 ends of EBI COM3 are grounded GND；

Chip U2_6（Model KC5032A48.0000C50 E00）It is active crystal oscillator, for chip U2_1 provides clock signal, Wherein, VD terminations+5V power supplys；3 ends point two-way output, leads up to electric capacity C18 ground connection GND, and another road meets lead 48M, exports Clock signal；GND ends are grounded GND；

Chip U2_8（Model 74HC245）The gating signal of control chip U2_1, wherein, DIR ends point two-way, connect all the way+ 5V power supplys, another road meets electric capacity C11；A0 terminates lead ALE, latch address；A1 termination leads RD, it is allowed to single-chip microcomputer read bus number According to；A2 termination leads WR, it is allowed to which single-chip microcomputer sends data to bus；OE termination leads Y2；B0 termination leads B0；B1 terminates lead B1；B2 termination leads B2；GND ends are grounded GND；

Chip U2_5 carries out data exchange, chip as Profibus-DP bus transceivers and Profibus-DP buses U2_2, U2_3, U2_4 carry out electrical isolation as optocoupler, and Profibus-DP specialized protocol chip SPC3 chips U2_1 is integrated with Bus protocol data are processed by all accord of Profibus-DP buses, and Profibus-DP signal conditioning circuits 3 are effective Alleviate processor U1_1 chips in microcontroller circuit 5（Model W78E58B）Operating pressure.

The pin schematic diagram of CAN interface 2 and the circuit diagram of CAN signal modulate circuit 4 as shown in figure 5, wherein, CAN signal Modulate circuit 4 includes CAN controller chip U3_1（Model SJA1000）, the VDD1 termination+5V electricity of CAN controller chip U3_1 Source；VDD2 and VDD3 terminates+ISO5V power supplys；Vss1, Vss2, Vss3 are grounded GND respectively；ALE/AS terminates ALE leads, latches Address；CS terminates lead Y1, the gating of control chip U3_1；RD/E termination leads RD, it is allowed to which single-chip microcomputer reads from chip U3_1 Data；WR terminates lead WR, and control single chip computer writes data to chip U3_1；XTAL1 ends point two-way, connects crystal oscillator all the way One end of Z, separately leads up to electric capacity C31 ground connection GND；XTAL2 ends point two-way, connects the other end of crystal oscillator Z all the way, another Road is grounded GND by electric capacity C32；MODE ends connect+5V power supplys by resistance R12；TX0 ends connect optocoupler U3_2 cores by resistance R13 Piece（Model 6N137SV）VF- ends, to CAN send data；RX0 ends point two-way, connects optocoupler U3_3 chips all the way（Model 6N137SV）VD ends, receive the data from CAN, separately lead up to resistance R16 and meet power supply+5V；RX1 ends are divided into two Road, leads up to resistance R14 ground connection GND, separately leads up to resistance R15 and meets power supply+5V；RST ends pass through phase inverter UxB（Model MC74HC04D）Meet lead RESET1, reset chip U3_1；INT ends connecting lead wire INT1, sends interrupt requests；AD0、AD1、 AD2, AD3, AD4, AD5, AD6, AD7 meet lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7 successively, carry out data or ground Transmit location；

The 7 pin ground connection GND of described phase inverter UxB, 14 pin meet power supply+5V, and 3 pin meet lead RESET1, and 4 pin connect chip The RST ends of U3_1；

The VD ends of described optocoupler U3_2 chips point two-way, leads up to resistance R18 and connects+ISO5V power supplys, and another road connects always Line transceiver U3_4 chips（Model PCA82C250）TXD ends, to bus send data；GND ends point two-way, connects electric capacity all the way C20, another road is grounded GND；Power Vcc point two-way, meets electric capacity C20 all the way, and another road connects+ISO5V power supplys；VF+ termination powers+ 5V；

VF+ termination+ISO5V the power supplys of described optocoupler U3_3 chips；VF- ends meet bus transceiver U3_ by resistance R17 The RXD ends of 4 chips, data are read from bus；The tunnels of Vcc Duan Fen tetra-, meet power supply+5V, another road connecting resistance R15, Ling Yilu all the way Connecting resistance R16, another road meets electric capacity C19；GND ends point two-way, meets electric capacity C19 all the way, and another road is grounded GND；

The VCC ends of described bus transceiver U3_4 chips point two-way, leads up to electric capacity C21 ground connection GND, and another road connects + ISO5V power supplys；Rs ends are grounded GND by resistance R19；GND ends are grounded GND；CANL and CANH connects CAN interface respectively；

CAN signal modulate circuit 4 realizes that RS485/RS422/RS232 standard serial ports device data is assisted with CAN fieldbus Conversion between view data, wherein CAN agreement are had been integrated with CAN controller SJA1000 chips U3_1, are responsible for CAN The conversion of bus protocol and data, U3_4 chips realize the transmitting-receiving with CAN data as CAN transceiver, and U3_2, U3_3 are Optocoupler carries out electrical isolation, it is ensured that the reliability and security of data transfer.

The circuit diagram of RS485/RS232/RS422 signal conditioning circuits 11, RS485/RS422 serial line interfaces 12 and RS232 string The pin schematic diagram of line interface 13 is as shown in fig. 6, wherein, RS485/RS232/RS422 signal conditioning circuits 11 include chip U4_1 （Model MAX3162）, the C1+ ends of chip U4_1 and the indirect electric capacity C1 at C1- ends；VCC ends point two-way, connects+5V power supplys, separately all the way All the way GND is grounded by electric capacity C3；GND ends are grounded GND；T1OUT terminates lead DB2, sends data to RS232 interfaces Equipment；Z terminates Z leads, and Y termination Y leads send data to the equipment with RS485/RS422 interfaces；R1OUT and R0 ends Lead RX is met, single-chip microcomputer reads data from serial port；RE232 is grounded GND with RE485 ends；SHDN and FAST terminates+5V power supplys； DE485 and TE232 terminates+5V power supplys；A, B end meet lead A, B respectively, receive from RS485/RS422 interface equipments Data；R1IN meets lead DB3, receives from the device data with RS232 interfaces；T1IN and DI terminates lead TX, single-chip microcomputer Data are write to serial ports；V- ends are grounded GND by electric capacity C5；The C2+ and indirect electric capacity C4 at C2- ends；V+ ends are grounded by electric capacity C2 GND；

Field apparatus of the connection with RS485/RS422 interfaces of RS485/RS422 serial line interfaces 12, wherein No. 1 pin connects Lead B；No. 2 pins meet lead A；No. 3 pins meet lead Z；No. 4 pins meet lead Y；No. 5 pins are grounded GND；

Field apparatus of the connection with RS232 interfaces of RS232 serial line interfaces 13, wherein No. 2 pins meet lead DB2；No. 3 are drawn Pin meets DB3；No. 5 pins are grounded GND.

Keyboard and display pannel circuit 9 are as shown in fig. 7, wherein, keyboard and display pannel circuit 9 include chip U5_1 （Model 12864LCD7920）, the Vss ends of chip U5_1 are grounded GND；Vcc terminates+5V power supplys；RS(CS）Termination lead CS；R/W (SID) termination lead SID；E (SCLK) termination leads SCLK；RST ends pass through phase inverter UxE（Model MC74HC04D）Connect lead RESET1, reset display；LEDA connects+5V power supplys；LEDK is grounded GND by resistance R1；

The 7 pin ground connection GND of described phase inverter UxE, 14 pin connect+5V power supplys, and 11 pin meet lead RESET1, and 10 pin connect chip The RST ends of U5_1；

" PRG " button two ends meet lead P1.0 and P1.3 respectively, used as parameter setting key；" FUNC " button two ends connect respectively Lead P1.0 and P1.4, as confirmation return key/switch key；"+" button two ends meet lead P1.1 and P1.3 respectively, used as number According to increase key；Connecting lead wire P1.1 and P1.4 are distinguished in "-" button two ends, and key is reduced as data；Distinguish at " RUN " button two ends Connecting lead wire P1.2 and P1.3, as start key；" STOP/RST " button two ends connecting lead wire P1.2 and P1.4, as stop/ Reset key.

Watchdog circuits 7 and the circuit diagram of power circuit 10 are as shown in figure 8, wherein, power circuit 10 includes chip U6_1 （Model A0505D-1WR2）,+V0 the ends of chip U6_1 divide two-way, connect+5V power supply lead wires simultaneously all the way and+ISO5V power supplys draw Line, for each chip provides supply voltage, connects C22 electric capacity between another road and 0V ends；Vin ends are by inductance L1 and switch electricity Source output terminal is connected, and is filtered；GND points of two-way, is grounded GND all the way, separately leads up to electric capacity C23 and connects Switching Power Supply output End；

The 1 pin output+5V power supplys of Switching Power Supply POWER, 2 pin ground connection GND；

The MR termination phase inverters UxAA of watchdog chip U6_2（Model MC74HC08AD）3 pin；VCC terminates+5V power supplys, GND ends are grounded GND；WDI terminates lead P3.5, the pulse signal from single-chip microcomputer is received, in the time interval less than 1.6S Can not receive pulse signal then makes WDO ends level by step-down high, causes reset；1 pin of WDO termination phase inverters UxAA；RESET is terminated Lead RESET1；

The 7 pin ground connection GND of described phase inverter UxAA；14 pin connect+5V power supplys；2 pin are divided into three tunnels, lead up to reset and open RESET ground connection GND are closed, the second tunnel connects+5V power supplys by resistance R20, finally lead up to electric capacity C24 ground connection GND, realized manual Reset.

The circuit diagram of extended menory circuit 6 is as shown in figure 9, wherein, extended menory circuit 6 includes chip U7_1（Model KM62256C）, the VCC ends of chip U7_1 point two-way connects+5V power supplys all the way, and another road is grounded GND by electric capacity C10；WE is terminated Lead WR, external memory storage write gate；OE terminates lead RD, external memory storage read gate；A0、A1、A2、A3、A4、A5、A6、A7 End successively with chip U7_2（Model 74LS373）Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7 end connection, as address least-significant byte believe Number；A8, A9, A10, A11 end are sequentially connected lead A8, A9, A10, A11, high 4 as address；I/O1、I/O2、I/O3、I/ O4, I/O5, I/O6, I/O7, I/O8 meet lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7 successively, for sending/receiving Data；CS terminates lead Y0, and gating chip is operated；Vss is grounded GND；

The VCC ends of described chip U7_2 point two-way, connects+5V power supplys all the way, and another road meets electric capacity C9；OE ends are grounded GND； GND ends are grounded GND；G terminates lead ALE latch address signals；D0, D1, D2, D3, D4, D5, D6, D7 connect successively lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, for receiving address or data-signal.

The concrete operation step and main program flow of controlling network multi-protocol data conversion equipment of the present invention

The multi-protocol data conversion equipment can complete following 6 kinds of data translation tasks：RS485 standard serial interface equipment Data are to Profibus-DP field bus protocols data, RS485 standard serial interfaces device data to CAN field bus protocols Data, RS232 standard serial interfaces device data are to Profibus-DP field bus protocols data, RS232 standard serial interfaces Device data is to CAN field bus protocols data, RS422 standard serial interfaces device data to Profibus-DP fieldbus Protocol data, RS422 standard serial interfaces device data are to CAN field bus protocol data.

The panel schematic diagram of keyboard of the invention and display pannel circuit 9 is as shown in Figure 10, in the front panel of cabinet 18 On have display and 6 function buttons, the function distribution of button is as follows, parameter setting key " PRG "：For entering " parameter setting The interfaces at different levels of state "；Confirm return keys/switch key " FUNC "：At " parameter setting state " be used for the current set of menu parameter or Change the determination of parameter and return to Previous Menu, pressed this key successively when display shows " running status " and checked for switching Related operational factor, presses this key and checks that dependent failure is believed for switching successively when display shows " fault-alarming state " Breath；Increase key "+"：For increasing function code, parameter item or parameter value etc., pinning this key and being continued above 3S quickly to increase Data；Reduce key "-"：For reducing function code, parameter item or parameter value etc., pinning this key and being continued above 3S quickly to subtract Small data；Start key " RUN "：Pressing this key when display shows " operation SBR " makes plant running；Stopping/reset key “STOP/RST”：This key is pressed when display shows " running status " makes device out of service, and " failure report is shown in display This key is pressed during alert state " makes device return to " operation SBR "；Display is concentrated on a LCDs, single cent local area With Chinese display area, text area display various parameters, Chinese display area display related Chinese annotation.

First, apparatus of the present invention are carried out external connection and power supply, in cabinet by the data class changed according to specific requirement 18 left surface connects cabinet 18 to Profibus-DP fieldbus by Profibus-DP EBIs 1, or in cabinet 18 Left surface by CAN interface 2 connect cabinet 18 arrive CAN fieldbus；It is serial by RS232 in the right flank of cabinet 18 The connection cabinet 18 of interface 13 is to RS232 standard serial interface equipment or serial by RS485/RS422 in the right flank of cabinet 18 The connection cabinet 18 of interface 12 arrives RS485/RS422 standard serial interface equipment；By the upper side 220V ac power plugs of cabinet 18 It is connected on 220V AC Power supply sockets, the power switch 16 for opening the upper side of cabinet 18 is powered to whole device.

The present invention combines the main program flow chart of concrete operation step as shown in figure 11, starts power up, after system initialization Call start display program, display display initial interface, including " exploitation version number ZH-1 " and " welcome is used " printed words it is lasting 2S, is then entered by programme-control and prepares holding state, and display shows " operation SBR "；If device need not be changed Data conversion type and relevant parameter that last time operation is set, are run by " RUN " stroke sequence starter, and system is called accordingly Data converter, display shows " running status ", and " FUNC " key is now pressed successively, and related fortune can be checked by programme-control Line parameter, when RS485 to PROFIBUS-DP bus datas are changed, " FUNC " key is pressed successively can check tributary address, baud Rate, data transmit/receive the parameters such as state；Broken down at " running status " alarm, be transferred to automatically by programme-control display " therefore Barrier alarm condition " interface, " FUNC " key is now pressed successively can check dependent failure warning message；Pressed in plant running " STOP/RST " key makes device out of service and returns " operation SBR ", and " STOP/ is pressed at " fault-alarming state " RST " keys make device return to " operation SBR ".

If necessary to change data conversion type and the relevant parameter that device last time is set, show that " operation is accurate in display " PRG " key being pressed during standby state " and " parameter setting state " being entered by programme-control, " function code occurs in this interface in display FC1~FC6 " menus, wherein, FC=1 represents RS485 standard serial interfaces device data to the number of Profibus-DP fieldbus According to translation type；FC=2 represents RS485 standard serial interfaces device data to the data conversion type of CAN fieldbus；FC=3 Represent RS232 standard serial interfaces device data to the data conversion type of Profibus-DP fieldbus；FC=4 is represented Data conversion type of the RS232 standard serial interfaces device data to CAN fieldbus；FC=5 represents that RS422 standard serials connect Data conversion type of the jaws equipment data to Profibus-DP fieldbus；FC=6 represents RS422 standard serial interface number of devices According to the data conversion type to CAN fieldbus；Choose the function code of needs in a menu with "+" or "-" key（Data turn Change type）, then all parameter item interfaces that " PRG " key is included into the function code are pressed, then with "+" or "-" key in the dish The parameter item of modification is needed in single choice, then presses " PRG " key into the corresponding range of parameter values of the parameter item, then with "+" or "-" key determines design parameter value, presses " FUNC " key and confirms the parameter value of modification and return to all parameter item interfaces of higher level, at this Menu can start to change next parameter item；At " parameter setting state ", no matter display is at that grade of interface, in program The lower function of pressing " FUNC " key of control is all to this grade of confirmation of menu parameter setting and returns to higher level interface.

Apparatus of the present invention specific operation process is illustrated with one embodiment below, function code is set to FC=2 in original device （Data conversion type of the RS485 standard serial interfaces device data to CAN fieldbus）, it is FC=1 now to need change function code （Data conversion type of the RS485 standard serial interfaces device data to Profibus-DP fieldbus）, and in the data conversion In type, Profibus-DP tributary address is set to 6, and Configuration of baud rate is 187.5kb/s, and remaining parameter retains default value.Tool Body operating procedure is as follows：Cabinet 18 is connected by Profibus-DP EBIs 1 in the left surface of cabinet 18 and arrives Profibus- DP fieldbus, connects cabinet 18 and arrives RS485 standard serials in the right flank of cabinet 18 by RS485/RS422 serial line interfaces 12 Interface equipment, the upper side 220V ac power plugs of cabinet 18 are connected on 220V AC Power supply sockets, open cabinet upside The power switch 16 in face is powered to whole device.Display is transferred to " operation SBR " automatically after display initial interface 2S Interface, presses " PRG " key and enters " parameter setting state ", chooses " function code FC=1 " in a menu with "+" or "-" key, then press All parameter item interfaces that " PRG " key is included into " function code FC=1 ", then choose " tributary address with "+" or "-" key Set " parameter item, then press " PRG " key and enter " tributary address setting " corresponding parameter area of parameter entry value, then with "+" or "-" key chooses " 6 ", presses " FUNC " key and confirms modification parameter value and return to all parameter item interfaces of higher level；Again with "+" or "-" key chooses " baud rate " parameter item, then presses " PRG " key into the corresponding parameter area of " baud rate " parameter item, then uses "+" or "-" key are used cooperatively and are set to " 187.5Kpbs ", then are pressed " FUNC " key confirmation modification parameter value and returned to higher level All parameter interfaces, then press " FUNC " key display interfaces and return to upper level " function code FC1~FC6 " menu, then press " FUNC " key display interfaces return to upper level " operation SBR " interface；Apparatus of the present invention are connected at it Can only be as the Profibus-DP slave stations of passive response, in device parameter modification completion on Profibus-DP fieldbus Afterwards, to apparatus of the present invention in the Profibus-DP main websites of the Profibus-DP fieldbus（Profibus-DP slave stations）Enter Row hardware configuration, corresponding communication program is write, the Profibus-DP protocol data read/write that apparatus of the present invention are changed could be arrived In Profibus-DP main websites；Above step is completed, when display shows " operation SBR " interface, the startup of " RUN " key is pressed Plant running, system calls RS485 to Profibus-DP data converters automatically, carries out data conversion；Shown in display Pressing " FUNC " key when " running status " successively can check that RS485 device datas are changed to Profibus-DP fieldbus datas Related operational factor, alarm of being broken down at " running status ", the interface of display is transferred to " fault-alarming state " automatically Interface, " FUNC " key is now pressed successively can check dependent failure warning message；In " running status " or " failure report at device Pressing " STOP/RST " key during alert state " makes device out of service and returns " operation SBR ".

Claims (8)

1. controlling network multi-protocol data conversion equipment, it is characterised in that including Profibus-DP EBIs（1）It is total with CAN Line interface（2）, described Profibus-DP EBIs（1）It is connected with Profibus-DP buses on the outside of cabinet, in cabinet Inner side and data converting circuit（17）In Profibus-DP signal conditioning circuits（3）Side connection, the Profibus- DP signal conditioning circuits（3）Opposite side and microcontroller circuit（5）Connection；Described CAN interface（2）On the outside of cabinet It is connected with CAN, on the inside of cabinet and data converting circuit（17）In CAN signal modulate circuit（4）Side connection, CAN signal modulate circuit（4）Opposite side and microcontroller circuit（5）Connection；Described microcontroller circuit（5）Will also be respectively With extended menory circuit（6）, watchdog circuits（7）, the first crystal oscillating circuit（8）, keyboard and display pannel circuit（9）、 Power circuit（10）, RS485 RS232 RS422 signal conditioning circuits（11）Connection, described extended menory circuit（6）With In to microcontroller circuit（5）Expand external RAM；Described watchdog circuits（7）For preventing program fleet；Institute The first crystal oscillating circuit stated（8）For to microcontroller circuit（5）Accurate clock is provided；Described keyboard and display pannel Circuit（9）Parameter setting, operation operation and running status display function for apparatus of the present invention；Described power circuit（10） For to microcontroller circuit（5）Working power is provided；Described power circuit（10）Will also respectively with Profibus-DP signals Modulate circuit（3）, CAN signal modulate circuit（4）, RS485 RS232 RS422 signal conditioning circuits（11）, extended menory electricity Road（6）, watchdog circuits（7）, the second crystal oscillating circuit（14）, keyboard and display pannel circuit（9）Connection, carries to it respectively For working power, described power circuit（10）Also want and power switch（16）Connection；3rd crystal oscillating circuit（15）With CAN signal Modulate circuit（4）Connection, for giving its accurate clock of offer；Second crystal oscillating circuit（14）With Profibus-DP signal conditions Circuit（3）Connection, for giving its accurate clock of offer；Described data converting circuit（17）In RS485 RS232 RS422 signal conditioning circuits（11）Will also respectively with RS485 RS422 serial line interfaces（12）With RS232 serial line interfaces（13）Even Connect；Described RS485 RS422 serial line interfaces（12）On the outside of cabinet with RS485 RS422 field apparatus be connected；Described RS232 serial line interfaces（13）It is connected with RS232 field apparatus on the outside of cabinet；Described RS485 RS422 serial line interfaces （12）With RS232 serial line interfaces（13）Connection with field apparatus is using the DB-9 connectors of standard.

2. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described microcontroller Circuit（5）Composition be：

Microcontroller circuit（5）Including U1_1 chips, the reference voltage end VDD of U1_1 chips is divided into two-way, and+5V is connected to all the way Power supply, separately leads up to electric capacity C6 and is connected to ground GND；RXD/P3.0 serial ports receiver input termination RX leads, receive serial ports Data；TXD/P3.1 serial ports transmitter output termination TX leads, send data to serial ports；Clock oscillation circuit input/output 1 End XTAL1 is divided into two-way, and the side of quartz oscillator Y is connected to all the way, separately leads up to electric capacity C8 ground connection GND；Clock The end XTAL2 of oscillating circuit input/output 2 points is two-way, and quartz oscillator Y opposite sides are connected to all the way, is separately led up to Electric capacity C7 is grounded GND；VSS ends are grounded GND；INT0/P3.8 termination leads INT0；INT1/P3.3 termination leads INT1；WR/ P3.6 external data storages write gate termination lead WR, RD/P3.7 external data memory read gate termination lead RD is right respectively External memory storage is written and read control；P1.5, P1.6, P1.7 meet lead MOSI, MISO and SCK successively respectively, and program is write Single-chip microcomputer；P3.4, P4.0, P4.1 connect lead SCLK, CS and SID control display and show successively respectively；RST terminates lead RESET1, carries out reset operation；EA terminates+5V power supplys, and forbidding processor accesses external ROM；ALE terminates lead ALE, address lock Enable is deposited, address wire is multiplexed with data wire；P2.6/A14, P2.7/A15 end meet lead A14, A15 successively respectively, by decoding Device selection gating chip U1_4；P0.0/AD0、P0.1/AD1、P0.2/AD2、P0.3/AD3、P0.4/AD4、P0.5/AD5、 P0.6/AD6, P0.7/AD7 meet lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7 successively respectively, used as address and data Multiplex bus transmits address least-significant byte and data；P2.0/A8、P2.1/A9、P2.2/A10、P2.3/A11、P2.4/A12、P2.5/ A13 ends meet lead A8, A9, A10, A11, A12, A13 as address high successively respectively；T2/P1.0、T2EX/P1.1、P1.2、 P1.3, P1.4 meet lead P1.0, P1.1, P1.2, P1.3, P1.4 respectively；

The 1 termination lead MOSI of ISP interfaces U1_3；5 termination lead RESET1；7 termination lead SCR；9 meet lead MISO；2 Termination+5V power supplys；4th, 6,8,10 ends ground connection GND；

A1, B1 end of chip U1_2 meet lead A15, A14 successively, enter row decoding；Output end 1Y0,1Y1,1Y2 connect lead successively Y0、Y1、Y2；VCC termination powers+5V；G1 ends are grounded GND with GND ends；

Microcontroller circuit（5）As the core of controlling network multi-protocol data conversion equipment, the working method of the device is controlled And the control task of data conversion, display display function is controlled, all chip operations or mourn in silence all by microcontroller circuit（5） It is controlled.

3. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described Profibus-DP EBIs（1）Pin and Profibus-DP signal conditioning circuits（3）Composition be：

Profibus-DP signal conditioning circuits（3）It is special including Profibus-DP specialized protocol chips U2_1, Profibus-DP The vdd terminal of protocol chip U2_1 connects+5V power supplys；DIVIDER terminates+5V power supplys；Vss ends are grounded GND；XCS ends pass through resistance R2 Connect+5V power supplys；XWR terminates B2 leads；XRD terminates lead B1, control chip read-write；XINT/MOT ends are connect by resistance R3 Ground GND；CLK input end of clock meets lead 48M；AB8, AB9 end are grounded GND；AB10 ends are grounded GND by resistance R4；Data and Address multiplex port DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7 connect successively respectively lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, receive and send address least-significant byte or data；AB0, AB1, AB2, AB3, AB5 end connect successively respectively lead A8, A9, A10, A11, A13, as high address line；AB4 meets lead A12 by phase inverter UxA, used as high address line； MODE End connects+5V power supplys by resistance R5, is multiplexed data, address bus；ALE address latches enable termination lead B0；It is serial to send Mouth TXD ends are connected to the V1 ports of U2_3 chips, send data to Profibus-DP buses；Serial interface closing in RXD ends are connected to The V0 ends of U2_2 chips, receive the data from bus；RTS ends are connected to the VF- ends of U2_4 chips by resistance R9, as please Ask sending signal end；XCTS ends are grounded GND by resistance R6；XTEST0, XTEST1 end connect+5V electricity by resistance R7, R8 respectively Source；RESET terminates lead RESET1, and chip is resetted；X/INT ends connecting lead wire INT0, sends interrupt requests；

The 7 pin ground connection GND of described phase inverter UxA；14 pin connect+5V power supplys；2 pin meet AB4；1 pin connecting lead wire A12；

Described U2_2, U2_3, U2_4 chip is optocoupler, and Phototube Coupling is carried out to transceiving data, wherein, the V1 of described U2_2 The R ends of end connection bus transceiver U2_5 chips, receive bus data；VDD2 ends point two-way, leads up to electric capacity C12 ground connection GND, another road connects+5V power supplys；VDD1 ends point two-way, leads up to electric capacity C13 ground connection GND, and another road connects+ISO5V power supplys； GND1 ends point two-way, meets electric capacity C13 all the way, and another road is grounded GND；GND2 ends point two-way, meets electric capacity C12 all the way, and another road connects Ground GND；

The V0 ends of described U2_3 chips connect the D ends of bus transceiver U2_5, and data are sent to bus；VDD1 ends point two-way, + 5V power supplys are connect all the way, separately lead up to electric capacity C14 ground connection GND；VDD2 ends point two-way, connects+ISO5V power supplys, another a-road-through all the way Cross electric capacity C15 ground connection GND；GND1 ends point two-way, meets electric capacity C14 all the way, and another road is grounded GND；GND2 ends point two-way, connects all the way Electric capacity C15, another road is grounded GND；

Two-way is divided at the V0 ends of described optocoupler U2_4 chips, all the way connecting resistance R10, and another road meets the DE of bus transceiver U2_5 End, sends data and enables signal；VF+ terminates+5V power supplys；The tunnels of VCC Duan Fen tri-, the first via is grounded GND, second by electric capacity C16 Road connecting resistance R10, the 3rd tunnel meets power supply+ISO5V；VE terminates+ISO5V power supplys；GND ends point two-way, meets electric capacity C16, separately all the way GND is grounded all the way；

The tunnels of A Duan Fen tri- of bus transceiver U2_5 chips, meet terminal resistance R11 all the way, and another road connects the 8 of EBI COM3 End, finally connects 2 ends of jumper switch U2_7 all the way；The tunnels of B Duan Fen tri-, meet terminal resistance R11 all the way, and another road connects EBI 3 ends of COM3, finally connect 1 end of jumper switch U2_7 all the way；VCC ends point two-way, leads up to electric capacity C17 and is grounded GND, another Road connects ISO+5V power supplys；RE ends are grounded GND as read bus data Enable Pin；5 ends of EBI COM3 are grounded GND；

Chip U2_6 is active crystal oscillator, for chip U2_1 provides clock signal, wherein, VD termination+5V power supplys；3 ends point two-way is defeated Go out, lead up to electric capacity C18 ground connection GND, another road meets lead 48M, exports clock signal；GND ends are grounded GND；

The gating signal of chip U2_8 control chips U2_1, wherein, DIR ends point two-way connects+5V power supplys all the way, and another road connects electricity Hold C11；A0 terminates lead ALE, latch address；A1 termination leads RD, it is allowed to single-chip microcomputer read bus data；A2 terminates lead WR, Single-chip microcomputer is allowed to send data to bus；OE termination leads Y2；B0 termination leads B0；B1 termination leads B1；B2 termination leads B2； GND ends are grounded GND；

Chip U2_5 carries out data exchange as Profibus-DP bus transceivers and Profibus-DP buses, chip U2_2, U2_3, U2_4 carry out electrical isolation as optocoupler, and Profibus-DP specialized protocol chip SPC3 chips U2_1 is integrated with Bus protocol data are processed by all accord of Profibus-DP buses, Profibus-DP signal conditioning circuits（3）Have What is imitated alleviates microcontroller circuit（5）The operating pressure of middle processor U1_1 chips.

4. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described CAN Interface（2）Pin and CAN signal modulate circuit（4）Composition be：

CAN signal modulate circuit（4）Including CAN controller chip U3_1, the VDD1 termination+5V electricity of CAN controller chip U3_1 Source；VDD2 and VDD3 terminates+ISO5V power supplys；Vss1, Vss2, Vss3 are grounded GND respectively；ALE/AS terminates ALE leads, latches Address；CS terminates lead Y1, the gating of control chip U3_1；RD/E termination leads RD, it is allowed to which single-chip microcomputer reads from chip U3_1 Data；WR terminates lead WR, and control single chip computer writes data to chip U3_1；XTAL1 ends point two-way, connects crystal oscillator all the way One end of Z, separately leads up to electric capacity C31 ground connection GND；XTAL2 ends point two-way, connects the other end of crystal oscillator Z all the way, another Road is grounded GND by electric capacity C32；MODE ends connect+5V power supplys by resistance R12；TX0 ends connect optocoupler U3_2 cores by resistance R13 The VF- ends of piece, data are sent to CAN；RX0 ends point two-way, connects the VD ends of optocoupler U3_3 chips all the way, receives and comes from CAN The data of bus, separately lead up to resistance R16 and meet power supply+5V；RX1 ends are divided into two-way, lead up to resistance R14 ground connection GND, separately Lead up to resistance R15 and meet power supply+5V；RST ends meet lead RESET1, reset chip U3_1 by phase inverter UxB；INT ends connect Lead INT1 is met, interrupt requests are sent；AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7 connect successively lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, carry out data or address transmission；

The 7 pin ground connection GND of described phase inverter UxB, 14 pin meet power supply+5V, and 3 pin meet lead RESET1, and 4 pin connect chip U3_1's RST ends；

The VD ends of described optocoupler U3_2 chips point two-way, leads up to resistance R18 and connects+ISO5V power supplys, and another road connects bus receipts The TXD ends of device U3_4 chips are sent out, data are sent to bus；GND ends point two-way, meets electric capacity C20 all the way, and another road is grounded GND；Electricity Source Vcc points of two-way, meets electric capacity C20 all the way, and another road connects+ISO5V power supplys；VF+ termination powers+5V；

VF+ termination+ISO5V the power supplys of described optocoupler U3_3 chips；VF- ends connect bus transceiver U3_4 cores by resistance R17 The RXD ends of piece, data are read from bus；The tunnels of Vcc Duan Fen tetra-, meet power supply+5V, another road connecting resistance R15 all the way, and another road connects electricity Resistance R16, another road meets electric capacity C19；GND ends point two-way, meets electric capacity C19 all the way, and another road is grounded GND；

The VCC ends of bus transceiver U3_4 chips point two-way, leads up to electric capacity C21 ground connection GND, and another road connects+ISO5V electricity Source；Rs ends are grounded GND by resistance R19；GND ends are grounded GND；CANL and CANH connects CAN interface respectively；

CAN signal modulate circuit（4）Realize the number between RS485/RS422/RS232 standard serial ports device data and CAN According to exchange, during wherein CAN agreement has been integrated with CAN controller SJA1000 chips U3_1, be responsible for CAN agreement and The conversion of data, U3_4 chips realize the transmitting-receiving with CAN data as CAN transceiver, and U3_2, U3_3 are that optocoupler carries out electricity Air bound is from, it is ensured that the reliability and security of data transfer.

5. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described RS485/ RS232/RS422 signal conditioning circuits（11）, RS485/RS422 serial line interfaces（12）With RS232 serial line interfaces（13）Pin Composition is：

Wherein, RS485/RS232/RS422 signal conditioning circuits（11）Including chip U4_1, C1+ ends and the C1- ends of chip U4_1 Indirect electric capacity C1；VCC ends point two-way, connects+5V power supplys all the way, and another road is grounded GND by electric capacity C3；GND ends are grounded GND； T1OUT terminates lead DB2, sends data to the equipment with RS232 interfaces；Z terminates Z leads, and Y termination Y leads send data To the equipment with RS485/RS422 interfaces；R1OUT and R0 terminates lead RX, and single-chip microcomputer reads data from serial port；RE232 GND is grounded with RE485 ends；SHDN and FAST terminates+5V power supplys；DE485 and TE232 terminates+5V power supplys；A, B end connect respectively draws Line A, B, receive from the data with RS485/RS422 interface equipments；R1IN meets lead DB3, and reception comes from and connect with RS232 The device data of mouth；T1IN and DI terminates lead TX, and single-chip microcomputer writes data to serial ports；V- ends are grounded GND by electric capacity C5；C2+ With the indirect electric capacity C4 at C2- ends；V+ ends are grounded GND by electric capacity C2；

RS485/RS422 serial line interfaces（12）Field apparatus of the connection with RS485/RS422 interfaces, wherein No. 1 pin connects and draws Line B；No. 2 pins meet lead A；No. 3 pins meet lead Z；No. 4 pins meet lead Y；No. 5 pins are grounded GND；

RS232 serial line interfaces（13）Field apparatus of the connection with RS232 interfaces, wherein No. 2 pins meet lead DB2；No. 3 pins Meet DB3；No. 5 pins are grounded GND.

6. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described keyboard and aobvious Show device panel circuit（9）Composition be：

Keyboard and display pannel circuit（9）Including chip U5_1, the Vss ends of chip U5_1 are grounded GND；Vcc termination+5V electricity Source；RS(CS）Termination lead CS；R/W (SID) termination leads SID；E (SCLK) termination leads SCLK；RST ends pass through phase inverter UxE meets lead RESET1, reset display；LEDA connects+5V power supplys；LEDK is grounded GND by resistance R1；

The 7 pin ground connection GND of described phase inverter UxE, 14 pin connect+5V power supplys, and 11 pin meet lead RESET1, and 10 pin meet chip U5_1 RST ends；

" PRG " button two ends meet lead P1.0 and P1.3 respectively, used as parameter setting key；" FUNC " button two ends connect lead respectively P1.0 and P1.4, as confirmation return key/switch key；"+" button two ends meet lead P1.1 and P1.3 respectively, increase as data Plus key；Connecting lead wire P1.1 and P1.4 are distinguished in "-" button two ends, and key is reduced as data；" RUN " button two ends connect respectively Lead P1.2 and P1.3, as start key；" STOP/RST " button two ends connecting lead wire P1.2 and P1.4, as stopping/reset Key.

7. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described watchdog Circuit（7）And power circuit（10）Composition be：

Wherein, power circuit（10）Including chip U6_1 ,+V0 ends point the two-way of chip U6_1 connects+5V power supply lead wires simultaneously all the way With+ISO5V power supply lead wires, for each chip provides supply voltage, C22 electric capacity is connected between another road and 0V ends；Vin ends pass through Inductance L1 is connected with switched power output, is filtered；GND points of two-way, is grounded GND all the way, separately leads up to electric capacity C23 and connects Switched power output；

The 1 pin output+5V power supplys of Switching Power Supply POWER, 2 pin ground connection GND；

3 pin of the MR termination phase inverters UxAA of watchdog chip U6_2；VCC terminates+5V power supplys, and GND ends are grounded GND；WDI is terminated Lead P3.5, receives the pulse signal from single-chip microcomputer, and can not receive pulse signal in the time interval less than 1.6S then makes WDO End level causes reset by step-down high；1 pin of WDO termination phase inverters UxAA；RESET termination leads RESET1；

The 7 pin ground connection GND of described phase inverter UxAA；14 pin connect+5V power supplys；2 pin are divided into three tunnels, lead up to reset switch RESET is grounded GND, and the second tunnel connects+5V power supplys by resistance R20, finally leads up to electric capacity C24 ground connection GND, realizes multiple manually Position.

8. controlling network multi-protocol data conversion equipment according to claim 1, it is characterised in that described extension storage Device circuit（6）Composition be：

Extended menory circuit（6）Including chip U7_1, the VCC ends point two-way of chip U7_1 connects+5V power supplys, Ling Yilu all the way GND is grounded by electric capacity C10；WE terminates lead WR, external memory storage write gate；OE terminates lead RD, and external memory storage reads choosing It is logical；A0, A1, A2, A3, A4, A5, A6, A7 end are connected with Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7 end of chip U7_2 successively, make It is address least-significant byte signal；A8, A9, A10, A11 end are sequentially connected lead A8, A9, A10, A11, high 4 as address；I/O1、 I/O2, I/O3, I/O4, I/O5, I/O6, I/O7, I/O8 meet lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7 successively, For sending/receive data；CS terminates lead Y0, and gating chip is operated；Vss is grounded GND；

The VCC ends of described chip U7_2 point two-way, connects+5V power supplys all the way, and another road meets electric capacity C9；OE ends are grounded GND；GND End is grounded GND；G terminates lead ALE latch address signals；D0, D1, D2, D3, D4, D5, D6, D7 connect successively lead AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, for receiving address or data-signal.